39 



2a. Parapeneopsis sculptilis var. Haedwickii (Miers). 



PcKMS Hardu'ickii, Miers, P.Z.S., 1878, p. 300, pi. xvii. dg. 1. 



In this variety the andricum is more slender, and the median plate of the 

 thelycum has the shape of a vertical section of a mushroom. In addition, the 

 obscure median carination of the first two abdominal terga is absent. 



There are 68 specimens in the collection, registered as follows: — 



4070-90 7268-7305 7354-58 ^. ^^ . ut .• ^ " 



— — : : Orissa and traniam. " investicjator. 



9 9 9 



4412-18 



Madras and Pondiclierrj'. Purchased. 



9 



2b. Parapeneopsis sculptilis var. cultrieostris. Plate VII, fig. 23. 



In this variety, which may be merely another form of the male, the ros- 

 trum is straight and nearly horizontal, does not reach further than the middle 

 of the 2nd joint of the antennular peduncle, and has a peculiar dagger shape. 

 Only males are known. 



The collection includes 13 perfect specimens, registered under the follow- 

 ing numbers : — 



4060-66 72 .37-44 

 9 ' "" 9 



Orissa and Ganjam. " Investigator." 



4474 



— g — Snnderbunds, Hooglily R. F. Day. 



3. Parapeneopsis unota, Alcock. Plate VIII., fig. 25, 25a. 



Parapeneopsis uncta, Alcock. Ann. Mag. Nat. Hist. (7) xvi. 1905, p. 528. 



Compared with P. styUfera this species exhibits the following points of 

 difference : — 



The integument is even thicker and denser, and though sparsely punctate 

 has a pohshed greasy appearance. 



The rostrum has but a faint double curve and, owing to the absence of 

 any styliform prolongation, reaches only to the middle of the 2nd joint of the 

 antennular peduncle in both sexes. 



The antero-inferior angles of the carapace are sharply rectangular, not 

 spiniform or dentiform. 



As in /'. satlpfilis the post- rostral carina is canaliculate, and the sinuous 

 subhepatic ridge (defining the anterior portion of the cervical groove) does not 

 reach the antero-inferior angle of the carapace. 



Dorsal of the hepatic spine the cervical groove is very distinct up to the 

 longitudinal suture of the carapace, this being a quite distinctive feature. 



